| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.cassandra.cql3.functions; |
| |
| import java.util.concurrent.LinkedBlockingQueue; |
| import java.util.concurrent.TimeUnit; |
| |
| import org.apache.cassandra.concurrent.JMXEnabledThreadPoolExecutor; |
| import org.apache.cassandra.concurrent.NamedThreadFactory; |
| import org.apache.cassandra.utils.FBUtilities; |
| |
| /** |
| * Executor service which exposes stats via JMX, but which doesn't reference |
| * internal classes in its beforeExecute & afterExecute methods as these are |
| * forbidden by the UDF execution sandbox |
| */ |
| final class UDFExecutorService extends JMXEnabledThreadPoolExecutor |
| { |
| private static int KEEPALIVE = Integer.getInteger("cassandra.udf_executor_thread_keepalive_ms", 30000); |
| |
| UDFExecutorService(NamedThreadFactory threadFactory, String jmxPath) |
| { |
| super(FBUtilities.getAvailableProcessors(), |
| KEEPALIVE, |
| TimeUnit.MILLISECONDS, |
| new LinkedBlockingQueue<>(), |
| threadFactory, |
| jmxPath); |
| } |
| |
| protected void afterExecute(Runnable r, Throwable t) |
| { |
| } |
| |
| protected void beforeExecute(Thread t, Runnable r) |
| { |
| } |
| } |